Re: Raid Card controller for FC System

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edwardspl@xxxxxxxxxx wrote:
> Thomas Kappelmueller wrote:
> 
>> edwardspl@xxxxxxxxxx wrote:
>>  
>>
>>> Thomas Kappelmueller wrote:
>>>
>>>    
>>>
>>>> edwardspl@xxxxxxxxxx wrote:
>>>>
>>>>
>>>>      
>>>>
>>>>> Thomas Kappelmueller wrote:
>>>>>
>>>>>   
>>>>>
>>>>>        
>>>>>
>>>>>> Todd Denniston wrote:
>>>>>>
>>>>>>     
>>>>>>
>>>>>>          
>>>>>>
>>>>>>> Roger Heflin wrote, On 03/24/2008 02:20 PM:
>>>>>>>
>>>>>>>       
>>>>>>>
>>>>>>>            
>>>>>>>
>>>>>>>> edwardspl@xxxxxxxxxx wrote:
>>>>>>>>
>>>>>>>>         
>>>>>>>>
>>>>>>>>              
>>>>>>>>
>>>>>>>>> Alan Cox wrote:
>>>>>>>>>
>>>>>>>>>           
>>>>>>>>>
>>>>>>>>>                
>>>>>>>>>
>>>>>>>>>> On Sun, 23 Mar 2008 15:39:22 +0800
>>>>>>>>>> edwardspl@xxxxxxxxxx wrote:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>             
>>>>>>>>>>
>>>>>>>>>>                  
>>>>>>>>>>
>>>>>>>>>>> Dear All,
>>>>>>>>>>>
>>>>>>>>>>> Which model / type of ATA Raid card controller is good for work
>>>>>>>>>>> with New FC System ?
>>>>>>>>>>> Would you please recommend ?
>>>>>>>>>>>               
>>>>>>>>>>>
>>>>>>>>>>>                    
>>>>>>>>>>>
>>>>>>>>>> Almost every 'raid' controller for ATA devices is just driver
>>>>>>>>>> level raid,
>>>>>>>>>> so equivalent to using the built in lvm/md raid support that works
>>>>>>>>>> with
>>>>>>>>>> any devices. At the high end there are a few hardware raid cards
>>>>>>>>>> but they
>>>>>>>>>> rarely outperform ordinary ATA on PCI Express.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>             
>>>>>>>>>>
>>>>>>>>>>                  
>>>>>>>>>>
>>>>>>>> Edward,
>>>>>>>>
>>>>>>>> The cheapest 4-port raid cards are typically $300US, the 8-port
>>>>>>>> cards are quite a bit more. If you are a home user I would suggest
>>>>>>>> not wasting your money on the HW raid, and has others mentioned it
>>>>>>>> is not really worth the extra money for a home user, so use software
>>>>>>>> raid.
>>>>>>>>
>>>>>>>> Most of the cheaper cards are fakeraid and at best (if supported
>>>>>>>> under DMRAID) are only slightly better than software raid.
>>>>>>>>
>>>>>>>> Roger
>>>>>>>>
>>>>>>>>         
>>>>>>>>
>>>>>>>>              
>>>>>>>>
>>>>>>> So would the better question be:
>>>>>>> Which model / type of ATA multi-port card controller is good when you
>>>>>>> want to do software RAID with New Fedora System?
>>>>>>> i.e. which manufactures cards that you can hang 4+ drives off of,
>>>>>>> have enough independence[1] between drives, that doing software RAID
>>>>>>> works fast[2]?
>>>>>>> Can you get 4+ port SATA cards that don't claim to be "RAID" cards?
>>>>>>>
>>>>>>> Or has everything already been said here:
>>>>>>> http://linuxmafia.com/faq/Hardware/sata.html
>>>>>>> http://linux-ata.org/faq-sata-raid.html
>>>>>>>
>>>>>>> [1] I am making the old assumption that ATA drives on the same bus
>>>>>>> slow each other down. Does that really matter with SATA?
>>>>>>>
>>>>>>> [2] assuming the controller card is more likely to be the bottleneck
>>>>>>> than the processor, PCI bus, or drives.
>>>>>>>
>>>>>>>       
>>>>>>>
>>>>>>>            
>>>>>>>
>>>>>> Hi!
>>>>>> http://linux-ata.org/driver-status.html#matrix
>>>>>> I would buy a card which drivers have the most features.
>>>>>>
>>>>>> I chose a cheap "Silicon Image"-chipped sata1 card (sata_sil driver).
>>>>>> Hotplugging etc is working fine.
>>>>>>
>>>>>>
>>>>>> The sata_sil24 is the SATA2 chip.
>>>>>>
>>>>>> -Tom
>>>>>>
>>>>>>     
>>>>>>
>>>>>>          
>>>>>>
>>>>> Hello,
>>>>>
>>>>> Would you mind tell me your web site of your card model ?
>>>>>
>>>>> Thank for your comment!
>>>>>
>>>>> Edward.
>>>>>
>>>>>   
>>>>>
>>>>>        
>>>>>
>>>> hi!
>>>> http://www.st-lab.com/productf.asp
>>>> It is the one with 4 Ports. It cost me something like 20€/25$
>>>>
>>>> Btw I use Linux Software-Raid on it.
>>>> If you can't get that card just search google for something like
>>>> "SiI3114 controller card".
>>>>
>>>> The newer chips are called Sil3124 and i think there are also some with
>>>> 8 Ports but I'm not sure.
>>>>
>>>> Hope that helps
>>>> -Tom
>>>>
>>>>
>>>>
>>>>      
>>>>
>>> Hello,
>>>
>>> Why didn't use hardware raid for the Linux ( FC ) System ?
>>>    
>>>
>> Hardware-Raid is much more expensive and for home usage it is absolutely
>> not nesessary.
>>
>>  
>>
>>> Is there two ports of S-ATA also ?
>>>    
>>>
>> There is one card with 2 Sata Ports (Sil3112).
>>
>>  
>>
>>> Does FC System built-in driver with it ?
>>>    
>>>
>> The built-in FC8 driver works fine, no need to install additional content.
>>
>>  
>>
>>> Thank for your comment again...
>>>
>>> Edward.
>>>
>>>
>>>    
>>>
>>  
>>
> Hello,
> 
> Just visited http://www.siliconimage.com/products/product.aspx?id=29
> BUT it seems only support Windows System...
> And also to http://www.siliconimage.com/products/product.aspx?id=28
> It seem support Linux System ( BUT NOT sure FC System )...
> 
> Edward.
> 
> 
Hi
Have another look at: http://linux-ata.org/driver-status.html#matrix

These are Opensource drivers (not vendor drivers).

The Silicon Image chips work fine and the driver is already shipping
with most distributions (FC8 for sure).

-Tom

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